Cylinder-head for internal-combustion engines.



Witwsses "5- i I I J K. J. E. HESSELMAN. CYLINDER HEAD FOR INTERNALCOMBUSTION ENGINES. APPLICATION FILED IEB.24, 1913.

1,197,946, Patented Aug.18,1914.

KNUT JONAS ELIAS HESSELMAN, OF STOCKHIQLM, SWEDEN.

CYLINDER-HEAD FOR INTERNAL-COMBUSTION ENGINES.

Specification of Letters Yatent.

Patented Aug. 18,

Application filed February 24, 1913. Serial No. 750,351.

To all whom it may concern:

Be it known that I, KNUT JoNAs ELIAS HESSELMAN, a citizen of the Kingdomof Sweden, residing at Stockholm, Sweden, have nvented new and usefulImprovements in Cylinder-Heads for Internal-Combustion Engines, of whichthe following is a specification.

This invention relates to internal combustion engines and moreespecially to such water-cooled heads thereof that are formed with anaperture extending through the head and adapted to take up a fuelnozzle.

The object of the invention is to attain a more effective cooling of thesaid fuel nozzle than heretofore by compelling a part of the coolingwater passing through the head of the cylinder to fiow axially along thewalls of the said opening before it leaves the head.

The invention consists, briefly, in the provision of a water chambersurrounding the said opening and separated from the other water space ofthe head, said chamber being provided with an inlet for the water at theend facing the cylinder and with an outlet for the water at the otherend.

In the accompanying drawing I have shown two embodiments of myinvention.

Figure 1 shows a cylinder head seen from above and Fig. 2 shows asectional view on line A'BC of Fig. 1. Fig. 3 shows another head inaxial cross section.

Referring to Fig. 1, the head 1 is in well known manner formed with acentral aperdesigned at its inner end to communicate with. the explosionchamber of an internal combustion engine. The Water space. of the headis by means of an intermediate wall 3 divided into two chambers 4t and 5of which the inner one 4 surrounds the aperture 2 and at its lower endcommunicates. with the outer chamber 5 through a series of ports 6 inthe said intermediate wall 3. At the upper end the inner chamber a isprovided with an outlet 7, and in the lower portion of thesame chamber 4maybe provided radial wings or walls 8 adapted to prevent the waterflowing in through the ports 6 from flowing in peripheral directionWithin the chamber 4.- The outer chamber 5 is adapted to communicate inthe usual manner with the Water jacket of the cylinder through ports 9after the head 1 has been placed in position on the cylinder.

In the constructional form shown in Fig. 3 the chamber 4 formed betweenthe intermediate Wall 3 and the walls of the aperture 2 is in directcommunication with the water jacket of the cylinder after the head hasbeen placed in position on the latter. The connection is established bymeans of one or more channels or ports 10 in the wall of the head facingthe cylinder, said channels ending in the lower end of the chamber 4. Atthe other end the chamber 4 has an outlet 7. In-the constructional formshown in Fig. 3 water may be supplied to the other water space 5 of thehead 1 for instance through an aperture 11 in the wall of the outlet 7or it may be supplied in the usual manner direct from the water jacketof the cylinder.

The constructional forms shown in the rawing may eventually be combinedwith each other in such a manner that the water flowing axially throughthe chamber 4 is taken partly direct from the water jacket of thecylinder partly from the water space of the head 1. I

Having now described my invention what I claim as new and desire tosecure by Letters Patent is:

l. A cylinder head for internal combustion engines having an apertureextending through the head and open at the inner sine of thehead andadapted to takeup a fuel nozzle and also having an intermediate wallsurrounding and spaced from the wall of said aperture and dividing theinterior of the head into inner and outer water-receiving chambers,means for letting waterinto and out of the outer chamber, means forletting water into the inner chamber at end thereof, and means forletting water 01."; of the said chamber at the other end thereof.

2. A cylinder head for internal combus tion engines having an apertureextending through the head and open at the inner side of the head andadapted to take up a fuelnozzle and also having an intermediate wallsurrounding and spaced from the wall of said aperture and dividing theinterior of the head into inner and outer water-receiving chambers,spaced radial walls, of less length than the inner chamber, arranged insaid chamber and extending between the Wall of the aperture and saidspaced wall, means 1fler lgetting wate; inltomand out of the outer C amer means 01 e in Water II] 0 the inner chamber at one end %hereof, andKNUT JONAS A HESSELMAN' 5 means for lettin Water out of the saidWitnesses:

chem er at the ot er end thereof. CONRAD MUNN,

In testimony that I claim the foregoing RUTH PETERSSON.

as my invention, I have signed my name i1 presence of two subscrlblngwltnesses.

